Material plastic, metal About this item The probe body is made of high quality engineering plastics, lightweight and durable Design large-screen digital LCD display, easy to read data Support any position reset function, metric and imperial switching, manual switch, auto power off For measuring applications requiring special insulation and protection against magnetism or scratches It can be used to measure the thickness of paper, PU leather, plates, jewelry, batteries, magnetic materials, etc. ,Product Description feature: The thickness gauge has a large digital LCD display for easy reading Datas. The main body is made of high quality, lightweight and durable engineering plastics. Its shape is similar to a micrometer, and its function is also similar to a micrometer. It is mainly used to measure the outer diameter and thickness of pipes or rods. Directions: 1. Press the On/Off button to turn on. 2. Check if 0.00 is displayed, if not, press the ZERO button to reset. 3. Press the push tab, insert the coin in and release the tab. Read the measurement and take multiple measurements, then average the results for a more accurate result. Specification: - Measurement Range: 0-12.7 mm/0.5 inch - Resolution: 0.01 mm, 0.0005'' - Accuracy: 0.1 mm, 0.005'' - Working temperature: 0~40 -Storage temperature: -20~70 - Relative humidity: 80% - Power supply: LR44/SR44 1.5V button battery (not included) - Dimensions: 110 x 60 x 20 mm -Screen size: 33 x 10 mm Package Contents: 1 x Feeler Gauge